All-terrain vehicle gear-shifting safety device

Abstract

A gear-shifting safety device is provided for an all-terrain vehicle (ATV), including a gear lever, a gear-shifting hub shaft, a gear-shifting gear set, and a reversing bar. An end of the gear-shifting hub forms a step on which a block is provided. The block and the step form a stop face therebetween. The reversing bar has an end forming a stop section that is positionable on the step and is selectively in abutting engagement with the stop face so that to change to the reversing position, the reversing bar must be first actuated to disengage the stop section thereof from the stop face, allowing the switching fork to move to the reversing position on a position chute of the gear-shifting hub, thereby eliminating the damage of accidentally switching to reversing during the forward movement of the vehicle.

1. In an all-terrain vehicle having a gear-shifting safety device, a power unit, and a transmission gear wherein said gear-shifting safety device has a gear-shifting mechanism, said gear-shifting mechanism comprises:
 a gear-shifting lever; 
 a gear-shifting hub shaft having an end at which a circumferential step is formed, said circumferential step being provided with a block thereby forming a stop face between said block and said circumferential step; 
 a gear-shifting hub movably mounted on said gear-shifting hub shaft, said gear-shifting hub forming a position chute that defines a plurality of operation positions including a forward position, a neutral position and a reversing position; 
 a gear-shifting gear set comprising a shaft on which a plurality of gear-shifting gears and a switching fork guide rod are provided, said gear-shifting gears being of different sizes and having different numbers of teeth engageable with transmission gears of said transmission shaft to generate different gear ratios for output of different torque, said switching fork guide rod forming a switching fork that is fit in said position chute of said gear-shifting hub; and 
 a reversing bar having an end extending out of said power unit to be controlled by a control member for lateral movement, said control member being coupled to a control mechanism which has a rotary knob disposed at a position in vicinity of a body cover of said all-terrain vehicle, an opposite end of said reversing bar being located inside said power unit, said reversing bar having a stop section having an end being wholly positioned on said circumferential step and engageable with said stop face, said reversing bar comprising a resilient element for providing said reversing bar with a resilient return force.